Larks And Owls
The 2 extremes on the sleep bell curve, ie larks and owls
- larks (first peak at around 8 am to 11 am; hit a lull from 2 pm to 4 pm and bounce back to their best after 6 pm to around 9 PM. Some examples are Margaret Thatcher, Tim Cook- Apple's CEO and George W Bush.
- owls (peak from 11 am to early afternoon; experience a lull from 4 pm to 6 pm; then hit their straps from 8 pm till late. Examples include Paul Keating, Winston Churchill and Thomas Edison
As we get older, our schedules resemble owls more than larks.
NB Loss of sleep results in loss of IQ, eg 10 points if you miss 1 night's sleep